\documentclass{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[english,ngerman]{babel}
\usepackage[]{graphicx}
\usepackage{pst-all}
\usepackage[papersize={20cm,16cm},margin=0cm]{geometry}
\begin{document}
\thispagestyle{empty}
\psset{unit=0.5cm}
%\psset{xunit=0.565cm,yunit=0.5cm,runit=0.5cm}
\begin{pspicture}(-10cm,-10cm)(10cm,6cm)
%	\centering
			
	% Hals
	\rput(-5.5,-12){\psframe[fillstyle=solid,fillcolor=green,linecolor=green,linewidth=2pt](-5.5,-8)(5.5,8)}
		
	% Kopf
	\psellipse[fillstyle=solid,fillcolor=green,linecolor=green,linewidth=2pt](15,10)

	% Knochen
	\psellipse[fillstyle=solid,fillcolor=darkgray,linecolor=darkgray,linewidth=0.5pt](14.9,9.9)	
				
	% Gehirn
	\psellipse[fillstyle=solid,fillcolor=lightgray,linecolor=lightgray,linewidth=0.5pt](13.9,8.9)

	% Muskel
	\rput(-5.5,-9.9){\psframe[fillstyle=solid,fillcolor=orange,linecolor=orange,linewidth=2pt](-5.4,-9)(5.4,9)}
			
	% Rückenmark
	\rput(-5.5,-7.8){\psframe[fillstyle=solid,fillcolor=brown,linecolor=brown,linewidth=2pt](-1.5,-10)(1.5,10)}
	\qdisk(-5.5,-7.8){2pt}
	\uput[90](-5.5,-7.8){\LARGE{(-5.5,-7.8)}}
		
	% Tumor
	\rput(-1,5){\psellipse[fillstyle=solid,fillcolor=red,linecolor=red,linewidth=2pt](2,2)}
	
	
	% Augen
	\rput(14,-1){\psellipse[fillstyle=solid,fillcolor=blue,linecolor=blue,linewidth=2pt](1.5,1.5)}
	
	% Gitter
%	\psgrid[unit=3cm,subgriddiv=5,griddots=0,gridlabels=7pt,gridcolor=lightgray](-2,-2)(2,1.5)
	
	% Koordinanten schreiben
		% Hals
		\psset{linecolor=green}
		\qdisk(-5.5,-12){2pt}
		\psset{linecolor=black}
		\uput[270](-5.5,-12){\LARGE{(-5.5,-12)}}	
		% Tumor
		\qdisk(-1,5){2pt}
		\uput[45](-1,5){\LARGE{(-1,5)}}
		% Auge
		\qdisk(14,-1){2pt}
		\uput[45](14,-1){\LARGE{(14,-1)}}
		% Kopf
		\qdisk(0,0){2pt}
		\uput[45](0,0){\LARGE{(0,0)}}
		% Muskel
			\psset{linecolor=orange}
			\qdisk(-5.5,-9.9){2pt}
			\uput[180](-5.5,-9.9){\LARGE{(-5.5,-9.9)}}
			\psset{linecolor=black}		
\end{pspicture}

\end{document}

